﻿//==本JS是加载Lodop插件或Web打印服务CLodop/Lodop7的综合示例，可直接使用，建议理解后融入自己程序==

//用双端口加载主JS文件Lodop.js(或CLodopfuncs.js兼容老版本)以防其中某端口被占:
var MainJS = 'CLodopfuncs.js',
    URL_WS1 = 'ws://localhost:8000/' + MainJS, //ws用8000/18000
    URL_WS2 = 'ws://localhost:18000/' + MainJS,
    URL_HTTP1 = 'http://localhost:8000/' + MainJS, //http用8000/18000
    URL_HTTP2 = 'http://localhost:18000/' + MainJS,
    URL_HTTP3 = 'https://localhost.lodop.net:8443/' + MainJS //https用8000/8443

var CreatedOKLodopObject, CLodopIsLocal, LoadJsState

//==判断是否需要CLodop(那些不支持插件的浏览器):==
function needCLodop() {
    try {
        var ua = navigator.userAgent
        if (
            ua.match(/Windows\sPhone/i) ||
            ua.match(/iPhone|iPod|iPad/i) ||
            ua.match(/Android/i) ||
            ua.match(/Edge\D?\d+/i)
        )
            return true
        var verTrident = ua.match(/Trident\D?\d+/i)
        var verIE = ua.match(/MSIE\D?\d+/i)
        var verOPR = ua.match(/OPR\D?\d+/i)
        var verFF = ua.match(/Firefox\D?\d+/i)
        var x64 = ua.match(/x64/i)
        if (!verTrident && !verIE && x64) return true
        else if (verFF) {
            verFF = verFF[0].match(/\d+/)
            if (verFF[0] >= 41 || x64) return true
        } else if (verOPR) {
            verOPR = verOPR[0].match(/\d+/)
            if (verOPR[0] >= 32) return true
        } else if (!verTrident && !verIE) {
            var verChrome = ua.match(/Chrome\D?\d+/i)
            if (verChrome) {
                verChrome = verChrome[0].match(/\d+/)
                if (verChrome[0] >= 41) return true
            }
        }
        return false
    } catch (err) {
        return true
    }
}

//==检查加载成功与否，如没成功则用http(s)再试==
//==低版本CLODOP6.561/Lodop7.043及前)用本方法==
function checkOrTryHttp() {
    if (window.getCLodop) {
        LoadJsState = 'complete'
        return true
    }
    if (LoadJsState == 'loadingB' || LoadJsState == 'complete') return
    LoadJsState = 'loadingB'
    var head = document.head || document.getElementsByTagName('head')[0] || document.documentElement
    var JS1 = document.createElement('script'),
        JS2 = document.createElement('script'),
        JS3 = document.createElement('script')
    JS1.src = URL_HTTP1
    JS2.src = URL_HTTP2
    JS3.src = URL_HTTP3
    JS1.onload =
        JS2.onload =
        JS3.onload =
        JS2.onerror =
        JS3.onerror =
        function () {
            LoadJsState = 'complete'
        }
    JS1.onerror = function (e) {
        if (window.location.protocol !== 'https:') head.insertBefore(JS2, head.firstChild)
        else head.insertBefore(JS3, head.firstChild)
    }
    head.insertBefore(JS1, head.firstChild)
}

//==加载Lodop对象的主过程:==
; (function loadCLodop() {
    if (!needCLodop()) return
    CLodopIsLocal = !!(URL_WS1 + URL_WS2).match(/\/\/localho|\/\/127.0.0./i)
    LoadJsState = 'loadingA'
    if (!window.WebSocket && window.MozWebSocket) window.WebSocket = window.MozWebSocket
    //ws方式速度快(小于200ms)且可避免CORS错误,但要求Lodop版本足够新:
    try {
        var WSK1 = new WebSocket(URL_WS1)
        WSK1.onopen = function (e) {
            setTimeout('checkOrTryHttp()', 200)
        }
        WSK1.onmessage = function (e) {
            if (!window.getCLodop) eval(e.data)
        }
        WSK1.onerror = function (e) {
            var WSK2 = new WebSocket(URL_WS2)
            WSK2.onopen = function (e) {
                setTimeout('checkOrTryHttp()', 200)
            }
            WSK2.onmessage = function (e) {
                if (!window.getCLodop) eval(e.data)
            }
            WSK2.onerror = function (e) {
                checkOrTryHttp()
            }
        }
    } catch (e) {
        checkOrTryHttp()
    }
})()

//==获取LODOP对象主过程,判断是否安装、需否升级:==
function getLodop(oOBJECT, oEMBED) {
    var strFontTag = "<br><font color='#FF00FF'>打印控件"
    var strLodopInstall =
        strFontTag + "未安装!点击这里<a href='install_lodop32.exe' target='_self'>执行安装</a>"
    var strLodopUpdate =
        strFontTag + "需要升级!点击这里<a href='install_lodop32.exe' target='_self'>执行升级</a>"
    var strLodop64Install =
        strFontTag + "未安装!点击这里<a href='install_lodop64.exe' target='_self'>执行安装</a>"
    var strLodop64Update =
        strFontTag + "需要升级!点击这里<a href='install_lodop64.exe' target='_self'>执行升级</a>"
    var strCLodopInstallA =
        "<br><font color='#FF00FF'>Web打印服务CLodop未安装启动，点击这里<a href='CLodop_Setup_for_Win32NT.exe' target='_self'>下载执行安装</a>"
    var strCLodopInstallB =
        "<br>（若此前已安装过，可<a href='CLodop.protocol:setup' target='_self'>点这里直接再次启动</a>）"
    var strCLodopUpdate =
        "<br><font color='#FF00FF'>Web打印服务CLodop需升级!点击这里<a href='CLodop_Setup_for_Win32NT.exe' target='_self'>执行升级</a>"
    var strLodop7FontTag = "<br><font color='#FF00FF'>Web打印服务Lodop7"
    var strLodop7HrefX86 =
        "点击这里<a href='Lodop7_Linux_X86_64.tar.gz' target='_self'>下载安装</a>(下载后解压，点击lodop文件开始执行)"
    var strLodop7HrefARM =
        "点击这里<a href='Lodop7_Linux_ARM64.tar.gz'  target='_self'>下载安装</a>(下载后解压，点击lodop文件开始执行)"
    var strLodop7Install_X86 = strLodop7FontTag + '未安装启动，' + strLodop7HrefX86
    var strLodop7Install_ARM = strLodop7FontTag + '未安装启动，' + strLodop7HrefARM
    var strLodop7Update_X86 = strLodop7FontTag + '需升级，' + strLodop7HrefX86
    var strLodop7Update_ARM = strLodop7FontTag + '需升级，' + strLodop7HrefARM
    var strInstallOK = '，成功后请刷新本页面或重启浏览器。</font>'
    var LODOP
    try {
        var isWinIE = /MSIE/i.test(navigator.userAgent) || /Trident/i.test(navigator.userAgent)
        var isWinIE64 = isWinIE && /x64/i.test(navigator.userAgent)
        var isLinuxX86 = /Linux/i.test(navigator.platform) && /x86/i.test(navigator.platform)
        var isLinuxARM = /Linux/i.test(navigator.platform) && /aarch/i.test(navigator.platform)

        if (needCLodop() || isLinuxX86 || isLinuxARM) {
            try {
                LODOP = window.getCLodop()
            } catch (err) { }
            if (!LODOP && LoadJsState !== 'complete') {
                if (!LoadJsState) alert('未曾加载Lodop主JS文件，请先调用loadCLodop过程.')
                else alert('网页还没下载完毕，请稍等一下再操作.')
                return
            }
            var strAlertMessage
            if (!LODOP) {
                if (isLinuxX86) strAlertMessage = strLodop7Install_X86
                else if (isLinuxARM) strAlertMessage = strLodop7Install_ARM
                else strAlertMessage = strCLodopInstallA + (CLodopIsLocal ? strCLodopInstallB : '')
                document.body.innerHTML = strAlertMessage + strInstallOK + document.body.innerHTML
                return
            } else {
                if (isLinuxX86 && LODOP.CVERSION < '7.0.7.5') strAlertMessage = strLodop7Update_X86
                else if (isLinuxARM && LODOP.CVERSION < '7.0.7.5') strAlertMessage = strLodop7Update_ARM
                else if (CLODOP.CVERSION < '6.5.9.8') strAlertMessage = strCLodopUpdate

                if (strAlertMessage)
                    document.body.innerHTML = strAlertMessage + strInstallOK + document.body.innerHTML
            }
        } else {
            //==如果页面有Lodop插件就直接使用,否则新建:==
            if (oOBJECT || oEMBED) {
                if (isWinIE) LODOP = oOBJECT
                else LODOP = oEMBED
            } else if (!CreatedOKLodopObject) {
                LODOP = document.createElement('object')
                LODOP.setAttribute('width', 0)
                LODOP.setAttribute('height', 0)
                LODOP.setAttribute('style', 'position:absolute;left:0px;top:-100px;width:0px;height:0px;')
                if (isWinIE) LODOP.setAttribute('classid', 'clsid:2105C259-1E0C-4534-8141-A753534CB4CA')
                else LODOP.setAttribute('type', 'application/x-print-lodop')
                document.documentElement.appendChild(LODOP)
                CreatedOKLodopObject = LODOP
            } else LODOP = CreatedOKLodopObject
            //==Lodop插件未安装时提示下载地址:==
            if (!LODOP || !LODOP.VERSION) {
                document.body.innerHTML =
                    (isWinIE64 ? strLodop64Install : strLodopInstall) + strInstallOK + document.body.innerHTML
                return LODOP
            }
            if (LODOP.VERSION < '6.2.2.6') {
                document.body.innerHTML =
                    (isWinIE64 ? strLodop64Update : strLodopUpdate) + strInstallOK + document.body.innerHTML
            }
        }
        LODOP.SET_LICENSES("",
            "6DDEA57A05C67436A8715C628383A2A59FC",
            "152A06E8F6CBD6AC1F213ABFCB0D8604",
            "C94CEE276DB2187AE6B65D56B3FC2848",
            "");
        return LODOP
    } catch (err) {
        alert('getLodop出错:' + err)
    }
}

export { getLodop }
